Update Changelog.md (#476)

* Update Changelog.md

Changelog.md

@@ -1,13 +1,29 @@
 # Unreleased
 
+# 5.4.2 / AspNetCore 1.0.0
+
+### .NET8
+* Build with .NET8 sdk and run AspNetCore tests with .NET8 by @Daniel-Svensson in https://github.com/OpenRIAServices/OpenRiaServices/pull/463
+* Run most client, server and code generation tests with .NET8 by @SandstromErik in https://github.com/OpenRIAServices/OpenRiaServices/pull/458
+
+### Code generation
+* Do not use attributes reserved for the compiler in code generation. Will make it possible to use nullable reference types and the `required` modifier for fields and properties by @SandstromErik in https://github.com/OpenRIAServices/OpenRiaServices/pull/472
+
 ### AspNetCore updates
-* Add authentication documentation #466
-* Use FrozenSet in first location (QueryStringConverter)
-* Update versionprefix to 1.0.0 (for next release)
+* Various updates by @Daniel-Svensson in https://github.com/OpenRIAServices/OpenRiaServices/pull/466
+    * Add authentication documentation
+    * Use FrozenSet in first location (QueryStringConverter)
+    * Update versionprefix to 1.0.0 (for next release)
+
+### Testhost
+* Add support in `DomainServiceTestHost` for asynchronous queries that return a single entity by @erikoijwall in https://github.com/OpenRIAServices/OpenRiaServices/pull/464
 
 ### Other
-* Update nuget dependencies for tests
-* Fix test which would sometimes hang
+* Build improvments, including set `MSBUILDDEBUGPATH` allowing troubleshooting of build failures by @Daniel-Svensson in https://github.com/OpenRIAServices/OpenRiaServices/pull/463
+* Update nuget dependencies for tests by @Daniel-Svensson in https://github.com/OpenRIAServices/OpenRiaServices/pull/468
+* Fix test which would sometimes hang by @Daniel-Svensson in https://github.com/OpenRIAServices/OpenRiaServices/pull/469
+* Add tests to see that codegen works with nullable reference types by @Daniel-Svensson in https://github.com/OpenRIAServices/OpenRiaServices/pull/470
+* Use `BinaryHttpDomainClient` in AspNetCore Test by @SandstromErik in https://github.com/OpenRIAServices/OpenRiaServices/pull/471
 
 # 5.4.1